• The Science & Technology
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• v.9 no.7 s.86
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• pp.8-8
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• 1976

미국화성탐색선 "바이킹" 1호가 7월 20일 오후 8시 53분(한국시간) 드디어 화성 크리세 플래니티아(황금의 땅)에 착륙성공하였다. 10억여불이 투자된 "바이킹" 1호의 주목적은 화성에 생명체가 있는가를 과명하는데 있다. 모선인 바이킹궤도순회선과 자선인 화성 착륙선은 화성을 감싸고 있는 신비의 너울을 벗기기 위한 과학적 시험을 하게된다. 궤도순회선은 영상화시험, 적외선 열지도 작성, 수증기검출 무선과학을 위한 시험을 담당하게 되며 착륙선은 화성표면, 대기권, 기타 천문학연구, 대상물체의 영상하시험, 무기화학시험관측, 지진조사, 화성모래알의 자성시험을 하게된다.

• The Journal of the Petrological Society of Korea
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• v.18 no.1
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• pp.49-65
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• 2009

Endlessly, mankind has been pursuing its dream toward understanding and conquering our neighboring planet, Mars since Mars has been identified as a planet. After the development of advanced science and technology of human race in 1960, the Union of Soviet Socialist Republics (USSR) had initiated its dream toward Mars and finally at present mankind acquires numerous important clues of Mars through over forties of space programs toward Mars. Furthermore, mankind takes its effort in colonizing Mars within several decades. This manuscript introduces the history of space mission programs of Mars up to date and major scientific findings to understand the Mars.

• The Science & Technology
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• v.30 no.8 s.339
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• pp.16-18
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• 1997

화성에는 과연 생명체가 존재하는가. 지프형 탐사로봇 소저너가 화성표면의 토양샘플을 분석해서 지구로 알려옴으로써 화성의 신비가 점차 풀려지고 있다. NASA는 늦어도 2018년까지는 인간의 화성착륙을 목표로 탐사작업을 계속하고 있다.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2009.10a
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• pp.105-106
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• 2009

AZ31 (3% Al, 1% Zn) Mg 판재의 내식성 향상을 위해 Ti/Zr/Polymer 복합계의 Cr-free 화성처리 방법을 이용하였다. 염수분무시험을 통해 최고 72시간 ($5{\sim}10%$ 발청) 내식성이 나타남을 확인하였다. 화성피막의 내식성은 그 피막이 가진 성분, 균일도, 치밀도, 형상 및 두께에 의해 좌우되는 만큼 TEM, SEM을 통해 화성피막 구조가 내식성과 어떠한 관련이 있는지 조사하였다. 또한, 화성처리 전 단계 공정인 탈지와 산세 및 중화 공정의 변수 조절을 통해 전처리 공정이 최종 화성피막의 물성에 어떠한 영향을 미치는지 조사하였다. 탈지조건을 $35{\sim}40^{\circ}C$, 5분에서 $50{\sim}80^{\circ}C$, $10{\sim}20$분으로 변경 시 좀 더 균일한 외관을 얻을 수 있었고, 적절한 중화제 선택을 통해 화성피막을 균일하게 형성시킬 수 있었다. 투과전자현미경 결과로 미루어 화성피막의 두께보다 균일도와 치밀도가 내식성에 결정적인 영향을 미치는 것을 확인할 수 있었다.

• The Journal of the Petrological Society of Korea
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• v.21 no.2
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• pp.193-202
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• 2012

There were three cycles of igneous activities from the late Paleozoic to early Cenozoic; Permian to Triassic, Jurassic, and Cretaceous to Paleogene. After the beginning of each igneous activity cycle, igneous activity became more frequent until its climax. It is noteworthy that A-type magmatisms are reported from near the ends of the all three igneous activity cycles. In addition, adakitic magmatisms occurred at the beginning of both the Permian-Triassic and the Cretaceous-Paleogene cycles. Most of the igneous activities during the late Paleozoic to early Cenozoic period were subduction-related. Therefore, transitions among beginning, proceeding, and closing of the igneous activity cycles would be intimately related with changes in directions of plate movements. In this context, I suggest following hypotheses. The closing of the Permian-Triassic igneous cycle was possibly a consequence of radical adjustment of plate motion occurred due to continental collision between north and south China blocks. Considering that no appreciable tectonic activities were recognized from the east Asian continent at the closing of the Jurassic igneous cycle, it seems that one of the strong events related with Gondwanaland-breakup and subsequent birth of the new oceans, which might cause sudden adjustments of plate motions. The closing of the Cretaceous-Paleogene igneous cycle seems to be caused as a consequence of the collision between India and Asia continents. Meanwhile, adakitic igneous bodies emplaced at the beginnings of the Permian-Triassic and Cretaceous-Paleogene cycles could be products of slab-melting during the early stages of the subduction.

• Aerospace Engineering and Technology
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• v.12 no.1
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• pp.94-104
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• 2013

In solar system, Mars which has the most similar environment with the Earth has been steadily studied for the purpose of habitable environment for the future manned exploration and settlement. During the daytime, Martian ionosphere can be used for the ground-ground communications between lander and rover through the reflection of the radio wave from ionosphere. In addition, researches about Martian ionosphere provide the link of revolution of water and atmosphere. Martian ionospheric observations were performed by the occultation experiments onboard Mariner, Mars, Viking series during early Martian explorations as well as recent Mars Global Surveyor. Low frequency radar and plasma analyzer are on board Mars Express and Viking-1, 2 lander obtained the only vertical plasma density profile during their entry phase. In this paper, we studied the characteristics of scientific payloads observing Martian ionosphere and then analyzed the usability of ionospheric research according to the communication and climate on Mars.

• Tunnel and Underground Space
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• v.33 no.5
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• pp.373-387
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• 2023

Scientific exploration of extraterrestrial planets has gripped human imagination since the advent of space travel. Human missions to Mars could produce insight into the essential questions of how, when and where life began on Earth. Such missions would only be feasible using local space resources materials, a concept called in situ-resource utilization (ISRU). The purpose of this paper is to provide a thorough review of the currently available Mars soil simulants and to determine those with geotechnical properties most appropriate for vehicle mobility studies. Sourcing and processing are considered since full-scale studies require bulk quantities of material on the order of tens of tons. This review identifies the simulants with the highest fidelity to Mars wind drift soils. In addition, recommendation guide for mars soil simulant development made.

• Proceeding of EDISON Challenge
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• 2016.03a
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• pp.614-618
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• 2016

본 논문은 EDISON_CFD를 활용하여 화성에서 운용 가능한 풍력터빈에 대해 실험 및 개선 설계하였다. 본 연구에서는 화성의 중력 및 공기밀도 등 화성의 환경 데이터를 적용함으로써 풍력터빈의 형상을 새롭게 설계 하였다. 개선 설계는 기존의 풍력발전기 형상을 변형시키며 해석을 진행하였으며, 받음각과 형상에 따라 생성되는 토크를 확인하였다. 개선설계한 풍력터빈 모델은 단위 미터 당 약 8 W의 전력생산이 가능한 것을 확인하였다.

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2018.06a
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• pp.129-130
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• 2018

• The Science & Technology
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• v.30 no.11 s.342
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• pp.16-19
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• 1997

미국을 비롯한 선진국들이 우주의 신비를 캐기 위한 탐사작업에 열을 올리고 있다. 미국은 지난 7월 우주선 패스파인더호를 발사, 화성표면에 착륙시켜 화성의 생생한 자료를 지구로 보내온 것을 계기로 2005년에는 화성 왕복선을 발사하고 2010년에는 인간이 직접 화성을 방문하는 계획을 실현할 계획이다. 또 미국과 러시아는 차세대 우주정거장 '알파'를 내년에 발사하기로 했다. 더욱 활발해진 우주개발의 현황을 알아본다.